It bothered me to have to create a new Color() just to change the alpha of a spriteRenderer or Image, so i made this simple extesion to set the alpha of anything that inherit the UnityEngine.UI.Graphic class, that includes spriteRenderer, Image, Text, TextMeshPro and so on.
<pre><code>public static class HelpExtensions
{
 public static void SetAlpha&lt;T&gt;(this T p_renderer, float p_alpha) where T : UnityEngine.UI.Graphic
 {
 Color __color = p_renderer.color;

 p_renderer.color = new Color(__color.r, __color.g, __color.b, p_alpha);
 }
}
</code></pre>With this extension you'll be able to just call:
<pre><code>GetComponent&lt;Image&gt;().SetAlpha(1f);
GetComponent&lt;SpriteRenderer&gt;().SetAlpha(1f);
GetComponent&lt;TMPro.TextMeshProUGUI&gt;().SetAlpha(1f);
</code></pre>

It bothered me to have to create a new Color() just to change the alpha of a spriteRenderer or Image, so i made this simple extesion to set the alpha of anything that inherit the UnityEngine.UI.Graphic class, that includes spriteRenderer, Image, Text, TextMeshPro and so on.

```
public static class HelpExtensions
{
 public static void SetAlpha<T>(this T p_renderer, float p_alpha) where T : UnityEngine.UI.Graphic
 {
 Color __color = p_renderer.color;

 p_renderer.color = new Color(__color.r, __color.g, __color.b, p_alpha);
 }
}
``` 

With this extension you'll be able to just call:

```
GetComponent<Image>().SetAlpha(1f);
GetComponent<SpriteRenderer>().SetAlpha(1f);
GetComponent<TMPro.TextMeshProUGUI>().SetAlpha(1f);
```

Unity SetAlpha

Unity Image, SpriteRenderer, TMPro, SetAlpha();